Run tests on PHP 8.3 and update test suite

Use Promise v3 template types

Update test suite to avoid unhandled promise rejections

Template params can only have one argument - README

In the previous PR (https://github.com/reactphp/promise-timer/pull/63) I missed incorrect usage ...

Template params can only have one argument

The fact that a promise can also be rejected with a Throwable and/or Exception is implied and th...

Update test suite and report failed assertions

Test on PHP 8.2

With PHP 8.2 coming out later this year, we should be reading for it's release to ensure all out...

chore(docs): remove leading dollar sign

Minor documentation improvements for upcoming Promise v3

Fix legacy HHVM build by downgrading Composer

Add badge to show number of project installations

Optimize Promise v3 API compatibility to avoid hitting autoloader

Improve forward compatibility with upcoming Promise v3 API

Add new `sleep()` function and deprecate `resolve()` and `reject()` functions

Improve `TimeoutException` legacy API by using explicit type casts

Improve API documentation and add parameter types and return types

Support PHP 8.1

Simplify usage by supporting new default loop

Use GitHub actions for continuous integration (CI)

Bye bye Travis CI, you've served us well.

Update PHPUnit configuration schema for PHPUnit 9.3

Add full core team to the license

Added the full core team in order of joining the team

Run tests on PHPUnit 9 and clean up test suite

Forward compatibility with react/promise 3

Run tests on PHP 7.4 and simplify test matrix

Add .gitattributes to exclude dev files from exports

Test PHP 7.2 and 7.3 on Travis

Check if the function is declared before declaring it.

Update README.md

typo

Improve memory consumption by cleaning up garbage references to pending promise without canceller

Improve memory consumption by cleaning up garbage references

Improve memory consumption by cleaning up unneeded references

Fix test suite forward compatibility with upcoming EventLoop releases

Forward compatiblity with PHPUnit 6

README improvements

* Adjust title
* Move travis badge to new line
* Fix ReactPHP spelling and use https for link
* ...

Forward compatibility with EventLoop v1.0 and v0.5

Only start timers if input Promise is still pending

Lock Travis distro so new defaults will not break the build

Add PHPUnit to require-dev